Question

Problem 4.41 Write balanced molecular and net ionic equations for the following reactions, and identify the...

Problem 4.41

Write balanced molecular and net ionic equations for the following reactions, and identify the gas formed in each.

Part A

Solid cadmium sulfide reacts with an aqueous solution of sulfuric acid .

Express your answer as a balanced chemical equation. Identify all of the phases in your answer.

CdS(s)+H2SO4(aq)→CdSO4(aq)+H2S(aq)

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Incorrect; Try Again

Part B

Ionic equation:

Express your answer as a balanced net ionic equation. Identify all of the phases in your answer.

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Part C

Identify the gas formed in this equation.

HS
CdS
CdSO4
H2S

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Correct

Part D

Solid magnesium carbonate reacts with an aqueous solution of perchloric acid.

Express your answer as a balanced chemical equation. Identify all of the phases in your answer.

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Part E

Ionic equation:

Express your answer as a balanced net ionic equation. Identify all of the phases in your answer.

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Homework Answers

Answer #1

A)
Molecular equation:
CdS(s) + H2SO4(aq) --> CdSO4 (aq) + H2S (g)

B)
Total ionic equation:
CdS (s) + 2H+ (aq) + SO42- (aq) -----> Cd2+ (aq) + SO42- (aq) + H2S (g)

Net ionic equation:
CdS (s) + 2H+ (aq) -----> Cd2+ (aq) + H2S (g)

C)
H2S is the gas

D)
molecular equation:
MgCO3(s) + 2 HClO4(aq) = Mg(ClO4)2(aq) + H2O(l) + CO2(g)

E)
Total ionic equation is:
MgCO3(s) + 2H+(aq) + 2ClO4-(aq) --> Mg2+(aq) + 2ClO4-(aq) + H2O(l) + CO2(g)
ionic equation is:
MgCO3(s) + 2H+(aq) = Mg2+(aq) + H2O(l) + CO2(g)

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